Tickets :: Comment on [#9282] Using SQL sessionhandler and SQL cache causes infinite recursion

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Comment	> Spent some time on this tonight and I'm leaning toward the problem > being that logger and cache shouldn't be getting a full-fledged > Horde_Db_Adapter, or that Horde_Db_Adapter shouldn't include logging > and caching, but a higher-level object should. From the comments at > http://misko.hevery.com/2008/08/01/circular-dependency-in-constructors-and-dependency-injection/: > > @Peter, > > here is how I would attack you problem. > > class Database() implements DB; > class Logger(Database db); > class LoggingDatabase(Logger log, Database db) implements DB; > > DB rawDatabase = new Database(); > Logger log = new Logger(rowDatabase); > DB dbForTheRestoOfApplication = new LoggingDatabase(log, rowDatabase); > > There you go. LoggingDatabase logs the commands as they go by and > than delegate it on a class of the same interface. This is know as > chain of responsibility and it is my favorite design pattern. > > ... so, that seems clean, but will take a little work.
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